(See related pages)
|
|
|
| external respiration respiratory surfaces internal respiration cellular respiration tracheae spiracles tracheoles spiral cuticle air sac gills operculum countercurrent flow lungs ventilation gas exchange mucous membrane goblet cells mucus pharynx larynx glottis epiglottis vocal cords trachea bronchi bronchioles asthma human lung surfactant alveoli diaphragm pleural cavity pleural membranes thoracic cavity inspiration expiration respiratory cycle tidal volume vital capacity residual air carbonic acid carbaminohemoglobin bicarbonate ion carbonic anhydrase carbon monoxide inspiratory center chemoreceptors cerebrospinal fluid sleep apnea altitude sickness |